Loddlenaut is a creature-raising / survival game set on an ocean planet that is recovering from an ecological disaster. Players assume the role of an interstellar custodian sent to clean up a planet that has been polluted by a megacorporation. By cleaning up marine debris and reviving the local flora, players can reintroduce alien creatures called "loddles" back to their natural habitats and help them adapt to their new homes—with the ultimate goal of creating a sustainable aquatic ecosystem.